Traffic function of the bridge
Highway bridge (2 x 2 lanes) with tramway line
Antecedents; the history of the bridge
Construction of the bridge was decided as early as in 1972, when a tender was held. Its
realisation is on agenda from the end of the eighties.
The axis of the bridge is in a distance of 27.98 m from the northern structure of the Southern
railway bridge. This fact determined the spans of the bridge.
The technical data of the bridge
Structural system, span lengths, widths
The main girder is a six-span continuous asymmetric double cell box girder, having cantilevers
on both sides to support the carriageways, walkway and bicycle track. Above the intermediate
supports the main girder is suspended by inclined (appr. 30 ) rods, having a box section of 1.5
x 1 m. Pylons carrying the lighting have the cross section of 3 x 1 m. Their height is 35 m from
the deck.
Total width of the bridge is 30.67 m.
Box width: top: 17.1 m, bottom: 13.1 m. Webs are inclined.
Box heights: large spans: 3.76 m, side spans: from 3.76 m decreases to 3.26 m parabolically.
Cantilever lengths: north: 7.685 m south: 4.485 m.
Deck
Structure, arrangement: Orthotropic slab, trapezoidal stiffeners
Spacing of cross girders: 4.105 m
Foundation, substructure
Piers in the riverbed are situated on 48 pieces of Soil-Mec piles having a diameter 1.5 m and
length of 24 m.
Abutments are r/c structures, being 31 m long, 11.78 m wide and 14.77 m high.
Bearings
A pair of Maurer-type disk bearings is at each supported cross section, fixed ones are situated
at the middle pier. Longitudinal sliding of the bridge is free in two directions.
Quantities of applied materials
Total amount of steel structure: 6500 t
Method of construction/erection; joints
Erection started on both banks from scaffolds, and was continued by free cantilever method
using temporary supports. Erection units are of the length 10.21 - 14.32 m, unit weights are
not exceeding the lifting capacity of floating crane "Adam Clark" (120 t). The double cell cross
section was divided into two asymmetrical parts.
Traffic situation
Situation of navigation: the clearance widths are the same as in case of the Southern railway
bridge.
public utilities: on north side bicycle track and sidewalk; heating steam conduits, gas and water
pipelines, electric and postal cables.
Test loading(s); periodical assessment of serviceability
Construction is finished at the end of 1995, load tests were carried out. Detailed measurement
program has been realised, its results are to be published.
Literature
Sigray, T.: Danube road bridge at Lágymányos, Proceedings of the US-Hungarian Bridge
Conference, Technical University of Budapest, Budapest, 1994.
